mgroovy created GROOVY-8490:
-------------------------------
Summary: Extend @Newify to support a class name pattern parameter
Key: GROOVY-8490
URL: https://issues.apache.org/jira/browse/GROOVY-8490
Project: Groovy
Issue Type: Improvement
Components: Compiler
Reporter: mgroovy
* @Newify should be extended to support a classNamePattern parameter
* All class names inside e.g. a @Newify annotated class that match the given
pattern shall support having its ctor called without the new keyword ("Python
style")
* Example:
{code}
@Newify(classNamePattern=/[A-Z].*/)
class Foo {
// Any class whose name starts with an uppercase letter
// can have its ctors called without new keyword inside Foo
String s
Integer x
File f
Foo(String s, File f, Integer x) {
this.s = s
this.f = f
this.x = x
}
void createFoo(File base) {
// Java style
new Foo(new String('abc'), new File(base,'log'), new Integer(123))
// new Groovy style
Foo(String('abc'), File(base,'log'), Integer(123))
}
}
{code}
* The classNamePattern parameter:
## Is 100% backwards compatible (same as the existing value parameter)
## Would allow e.g. @Newify(classNamePattern=/[A-Z].*/) to be auto-applied to
all classes in a project (same as e.g. [#GROOVY-8300])
*** In practice that would typically cover 99.9...% of all classes, since most
projects follow the Java convention of classes being the only callable entities
to start with an uppercase letter
*** The existing value parameter cannot be used that way on a global level,
since it is not practical to explicitly list all project classes
## Compile time performance wise classNamePattern=/[A-Z].*/ avoids having to
check any (method/field/variable)() call whether it is a class ctor call if it
is lowercase (i.e. again typically in 99.9...% of cases), i.e. the approach is
fast
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